Real W27?
#3
Also on the right rear inboard side of the axle housing tube there are two letters stamped in and are about 1/4" tall.
Should read
SV for the 3.23:1
SX for the 3.42:1
SZ for the 3.91:1
This is a '70 only option for the complete W-27 rear end and '71 was the cover only. As for the covers, there are subtle ways to tell if aftermarket.
Should read
SV for the 3.23:1
SX for the 3.42:1
SZ for the 3.91:1
This is a '70 only option for the complete W-27 rear end and '71 was the cover only. As for the covers, there are subtle ways to tell if aftermarket.
#8
OKAY
I think... the reproduction cover has no GM Part Number in it whereas the GM part does? It's quite small, like 1/8" characters, and down in amongst the ribbage.
AHA
look at about 2:00 position on this which I found by, you know, googling pertinent words:
http://s685.photobucket.com/user/jms...M2065.jpg.html
HPIM2065.jpg
Or, not... this Parts Place ad shows the PN in place on what is presumably the reproduction
http://www.ebay.com/itm/1964-72-Olds...-/350558386577
So, look for minor details like the crispness of the casting characters. The Google search brings up numerous images, one can probably find a few differences upon close examination.
I think... the reproduction cover has no GM Part Number in it whereas the GM part does? It's quite small, like 1/8" characters, and down in amongst the ribbage.
AHA
look at about 2:00 position on this which I found by, you know, googling pertinent words:
http://s685.photobucket.com/user/jms...M2065.jpg.html
HPIM2065.jpg
Or, not... this Parts Place ad shows the PN in place on what is presumably the reproduction
http://www.ebay.com/itm/1964-72-Olds...-/350558386577
So, look for minor details like the crispness of the casting characters. The Google search brings up numerous images, one can probably find a few differences upon close examination.
Last edited by Octania; January 23rd, 2015 at 09:46 AM.
#11
Also on the right rear inboard side of the axle housing tube there are two letters stamped in and are about 1/4" tall.
Should read
SV for the 3.23:1
SX for the 3.42:1
SZ for the 3.91:1
This is a '70 only option for the complete W-27 rear end and '71 was the cover only. As for the covers, there are subtle ways to tell if aftermarket.
Should read
SV for the 3.23:1
SX for the 3.42:1
SZ for the 3.91:1
This is a '70 only option for the complete W-27 rear end and '71 was the cover only. As for the covers, there are subtle ways to tell if aftermarket.
#12
Mine is a '72 factory 442, so if only a '70 option mine wouldn't have come with a true W27 anyway? I will check for the code you mentioned as well. I haven't got a magnet handy. My car originally had a 350 and has a 455 now, so I am wondering how far somebody who owned the car before me went. The cover could be show only. Thanks.
#15
Mine is a '72 factory 442, so if only a '70 option mine wouldn't have come with a true W27 anyway? I will check for the code you mentioned as well. I haven't got a magnet handy. My car originally had a 350 and has a 455 now, so I am wondering how far somebody who owned the car before me went. The cover could be show only. Thanks.
As far as the differences in the covers, there have been several threads covering this and joesw31 nailed it in that thread.
Another thing to consider is the "original" mold(s) that created the factory ones would've been also used for the ones bought over the counter at the dealership but not necessarily the ones used for producing the re-pops from other vendors.
Also touched upon before was the use of black bolts as opposed to "bare" bolts.
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sx455raidercelticfan
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January 12th, 2011 07:53 PM